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21cm Absorption Lines at High Redshift from Intervening Galaxies

Published online by Cambridge University Press:  26 May 2016

F. H. Briggs
F. H. Briggs*
Affiliation:
Kapteyn Astronomical Institute, 9700 AV Groningen, The Netherlands

Abstract

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Radio absorption line observations of neutral hydrogen gas against extended radio sources offers the means to measure sizes and kinematics in intervening galaxies at all redshifts up to the maximum redshift where radio galaxies are detected. Such observations can therefore trace the evolution of galaxies at redshifts z ≳ 2 where the damped Lyman — α statistics indicate that the mass in neutral gas exceeded the mass in stars.

Type
Part 2: Extra Galactic Neutral Hydrogen and Cosmology
Information
Symposium - International Astronomical Union , Volume 199: The Universe at Low Radio Frequencies , 2002 , pp. 83 - 90
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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